Each city bus can collect up to 550 pounds of plastic bottles and cups every day. The collected bottles are sold to recycling companies and the money earned from it goes toward running the bus companies and providing money for green spaces in the city.

每辆城市公交车每天可以收集多达550磅的塑料瓶和塑料杯。收集到的塑料瓶被卖给回收公司，赚来的钱用于运营公交车公司，并为城市的绿化提供资金。

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Now the city wants to become a “living laboratory” for smart urban technologies of all kinds—not just water and transport systems but green buildings, clean energy and city management too.

而今，这座城市希望成为各种智能城市技术的“生活实验室”，这些技术不仅包括供水与交通系统，还涉及绿色建筑、清洁能源及城市管理。

youdao

Now the city wants to become a "living laboratory" for smart urban technologies of all kinds-not just water and transport systems but green buildings, clean energy and city management too.

而今，这座城市希望成为各种智能城市技术的“生活实验室”，这些技术不仅包括供水与交通系统，还涉及绿色建筑、清洁能源及城市管理。

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They were part of the city's Green Summer Job Corps, a project of the District Department of the Environment.

VOA: special.2009.09.04

This huge group of green warriors entered the city as friends and allies.

VOA: special.2010.07.31

They hit the ground on green modes of transport to take on the Green City Challenge, picking up the best of green initiatives in a city heaving with mechanical and human traffic.

CNN: This month on Road to Rio

Construction just commenced on a new 90, 000-square-foot store in North Portland that will be home to not only the largest green roof in the green roof-happy city of Portland, but the largest green roof in the entire state of Oregon.

FORBES: Portland To Get Massive Green Roof -- Atop A Walmart

It also used to be described as the green city in the sun, but now it more resembles a concrete jungle.

BBC: Joseph's odyssey